Author Topic: triple pumper six pack  (Read 3851 times)

Offline aussie-e-body

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triple pumper six pack
« on: February 05, 2007 - 08:30:08 AM »
gday all,anyone out there familiar with accelerator pump equipped outboard six pack carbs?pn 4783.what metering block should they have.is it the same as a rear metering block on a double pumper?or should it have a power valve?i bought six pack carbs presuming they were 4782 center,4783 out but they were ordinary 2bbls that have had the air cleaner flange milled to the "D" shape.they guy sold them coz he couldnt get them to work.no wonder ,he had them all opening at the same time and blocked the pump passages where the ball bearing should be on the outboards.i reckon i can convert these outboards to 4783s.can i use the standard metering block with the idle  screws seated,will it need a power valve plug.ive got all the bits to get the pumps working so thats not a prob.   thanks guys
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Offline Chryco Psycho

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Re: triple pumper six pack
« Reply #1 on: February 05, 2007 - 12:54:12 PM »
I would use metering blocks with powervalves but you may not need them depending how you phase their opening with the center carb & each other
 this is my Favorite way to run a 6 pack with all manual carbs & simple jet changes using metering blocks instead of metering plates 

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Offline Challenger6pak

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Re: triple pumper six pack
« Reply #2 on: February 05, 2007 - 02:03:42 PM »
Can you post a pic of these?
1969 Sport Satellite H code convertible, 1970 Cuda 440+6, 1970 Challenger R/T 440+6, 1970 Challenger 383 R/T auto, 1970 Challenger R/T 383 4 speed,1971 Challenger convertible.

Offline Chryco Psycho

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Re: triple pumper six pack
« Reply #3 on: February 05, 2007 - 03:27:41 PM »
they are on a customers car , I doubt I have any pix of it handy

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Offline Challenger6pak

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Re: triple pumper six pack
« Reply #4 on: February 05, 2007 - 03:54:39 PM »
I was unclear.  I was hoping Aussie had a pic.  Holley sold aftermarket carbs in the 70's that all had accelerator pumps.  These may be those. 
1969 Sport Satellite H code convertible, 1970 Cuda 440+6, 1970 Challenger R/T 440+6, 1970 Challenger 383 R/T auto, 1970 Challenger R/T 383 4 speed,1971 Challenger convertible.

Offline JS29U

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Re: triple pumper six pack
« Reply #5 on: February 05, 2007 - 04:55:32 PM »

  Guy i worked with back in 79 had a blue metalflake custum paintjob 440 6pack chall. with all 3 acelerator pumps.  The fat queer never got on it once for me. He bought it that way. My aluminum 69 int had mechanical linkage  back then with 1 acc. pump. Talk about a bog. Fat boy said his didnt bog.

   One day in a old crappy jyard, i spotted a vacumn pod sticking out of the mud in the main road. They gave it free too me.  Was a 340-6 end. I bought all new link, lines, 2 bowls and vac. pod back in 95 from place in albaturkey, nm. All rebuilt, still sitting in closet.

   Back in 95, i also took a holley 2 bbl and cut the horn into the d shape. I will test it replacing the ctr. carb. A few years ago , a few people on moparts used  same thing, 500cfm for the ctr. and said they it helped drop a few tenths.

  Too use that carb with vac. ends, i will have too drill a kill bleed into the venturi like the 350 ctr. The 500 doesnt have one. Also , can switch base plates.  I think the 950 hp is really a 750 with a 850 base?  Maybe try the 500 base on 350. Next i need the  new end plates with regular jets. Anyone know if yuo can buy new end floats?

  I have magazine article showing step by step all photos of a ga. dentist converting vac. carbs to all 3 acell. pumps.

Offline JS29U

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Re: triple pumper six pack
« Reply #6 on: February 05, 2007 - 05:04:49 PM »


   The guy i worked with had the regular 3 holley (all 3 pumps) that had side hung floats and fuel line on driver side.  Thats what alot of guys ran back then, fairly common, but didnt come from factory.  Kind of like 352 fords, but not sitting backwords.  I just saw a tri power 427 vette and was suprised that fuel line was on driver side with the center hung floats with no threads on pass. side for fittings.

Offline aussie-e-body

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Re: triple pumper six pack
« Reply #7 on: February 05, 2007 - 05:13:38 PM »
I was unclear.  I was hoping Aussie had a pic.  Holley sold aftermarket carbs in the 70's that all had accelerator pumps.  These may be those. 
got a pic of my mates pumper set up which are holley built,i'll post it tonight.mine are definately D.I.Y..ive been in vacum and pumper cars and the pumpers are waaaaaaayyyyyy better.ive never had so much fun in a car
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Offline aussie-e-body

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Re: triple pumper six pack
« Reply #8 on: February 05, 2007 - 07:12:48 PM »
1st pic is my carbs.2+3 are holleys
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Offline Challenger6pak

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Re: triple pumper six pack
« Reply #9 on: February 05, 2007 - 08:23:05 PM »
I have one of those set ups here.  They are the aftermarket Holleys.  I used them because of using solid lifter cams in the 600 lift range.  The vacuum carbs wouldn't work.
1969 Sport Satellite H code convertible, 1970 Cuda 440+6, 1970 Challenger R/T 440+6, 1970 Challenger 383 R/T auto, 1970 Challenger R/T 383 4 speed,1971 Challenger convertible.

Offline Moparal

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Re: triple pumper six pack
« Reply #10 on: February 05, 2007 - 09:39:14 PM »

Offline aussie-e-body

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Re: triple pumper six pack
« Reply #11 on: February 05, 2007 - 09:49:39 PM »
what i really need to know is the difference between standard and pumper metering blocks.ive contacted holley but no response.thanks guys
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Offline Chryco Psycho

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Re: triple pumper six pack
« Reply #12 on: February 05, 2007 - 11:24:02 PM »
the vacuum carbs use a metering plate not a block
 the pumper carbs use a block & as long as the pump passage is drilled could work for either as to what differences may exist in the emulsion tubes I have no idea

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Offline aussie-e-body

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Re: triple pumper six pack
« Reply #13 on: February 06, 2007 - 02:55:39 AM »
the vacuum carbs use a metering plate not a block
 the pumper carbs use a block & as long as the pump passage is drilled could work for either as to what differences may exist in the emulsion tubes I have no idea
i meant to say standard as in 2bbl non six pack.does a rear double pumper 4bbl metering block have a power valve.dumb question i know but ive never had a double pumper.im not really into nuts and bolts,im more of a body man.as you will find out when someone posts a "dumbest thing youve ever done to an engine" or "how to machine valve reliefs in pistons for free" :roflsmiley:topic.
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Offline Chryco Psycho

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Re: triple pumper six pack
« Reply #14 on: February 06, 2007 - 11:46:17 AM »
smaller carbs up to 700 cfm have no rear power valve , 750 up has a rear powervalve

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